Computer Networking Quiz

What is a computer network?

• A collection of computers and devices connected together

• A single computer with multiple users

• A computer without internet access

• A standalone system

Answer explanation

Explanation: A computer network is a group of interconnected computers and devices that communicate and share resources like files, internet access, and printers.

Which of the following is NOT a type of network topology?

• Star

• Ring

• Tree

• Hexagonal

Answer explanation

Explanation: Common network topologies include Star, Ring, Bus, Mesh, and Tree. Hexagonal is not a recognized network topology.

Which protocol is used for sending emails?

• HTTP

• FTP

• SMTP

• POP3

Answer explanation

Explanation: SMTP (Simple Mail Transfer Protocol) is used for sending emails, while POP3 and IMAP are used for receiving emails.

What does IP stand for in networking?

• Internet Protocol

• Internal Process

• Internet Pathway

• Interconnected Protocol

Answer explanation

Explanation: IP (Internet Protocol) is responsible for addressing and routing packets of data so they can travel across networks.

What type of network covers a large geographical area, such as a country or continent?

• LAN

• WAN

• PAN

• MAN

Answer explanation

Explanation: A Wide Area Network (WAN) covers large geographical areas, often using leased telecommunication lines. Examples include the Internet and corporate networks that span multiple locations.

Which device operates at the Data Link Layer of the OSI model?

• Hub

• Router

• Switch

• Modem

Answer explanation

Explanation: A switch operates at the Data Link Layer (Layer 2) and is used to forward data based on MAC addresses. Routers work at the Network Layer (Layer 3), and hubs operate at the Physical Layer (Layer 1).

Which layer of the OSI model is responsible for data encryption?

• Physical Layer

• Transport Layer

• Presentation Layer

• Network Layer

Answer explanation

Explanation: The Presentation Layer (Layer 6) is responsible for data encryption, compression, and formatting before transmission.

Which of the following is NOT a networking device?

• Switch

• Router

• Firewall

• Compiler

Answer explanation

Explanation: A compiler is used for programming, not networking. Switches, routers, and firewalls are all used to manage network traffic.

What does the ping command test?

• Network speed

• Connectivity between two devices

• Internet bandwidth

• Firewall security

Answer explanation

Explanation: The ping command sends ICMP Echo Request messages to a target device to check if it is reachable on a network.

What does VPN stand for?

• Virtual Private Network

• Variable Protocol Network

• Virtual Packet Node

• Verified Public Network

Answer explanation

Explanation: A VPN (Virtual Private Network) creates a secure, encrypted connection over a public network (such as the Internet), ensuring privacy and security.